- private class ClientGetCommandImpl implements ClientGetCommand {
-
- private String identifier;
- private boolean ignoreDataStore;
- private boolean dataStoreOnly;
- private Long maxSize;
- private Priority priority;
- private boolean realTime;
- private boolean global;
-
- @Override
- public ClientGetCommand identifier(String identifier) {
- this.identifier = identifier;
- return this;
- }
-
- @Override
- public ClientGetCommand ignoreDataStore() {
- ignoreDataStore = true;
- return this;
- }
-
- @Override
- public ClientGetCommand dataStoreOnly() {
- dataStoreOnly = true;
- return this;
- }
-
- @Override
- public ClientGetCommand maxSize(long maxSize) {
- this.maxSize = maxSize;
- return this;
- }
-
- @Override
- public ClientGetCommand priority(Priority priority) {
- this.priority = priority;
- return this;
- }
-
- @Override
- public ClientGetCommand realTime() {
- realTime = true;
- return this;
- }
-
- @Override
- public ClientGetCommand global() {
- global = true;
- return this;
- }
-
- @Override
- public Future<Optional<Data>> uri(String uri) {
- return threadPool.submit(new Callable<Optional<Data>>() {
- @Override
- public Optional<Data> call() throws Exception {
- DefaultFcpClient.this.connect();
- ClientGet clientGet = new ClientGet(uri, identifier, ReturnType.direct);
- if (ignoreDataStore) {
- clientGet.setIgnoreDataStore(true);
- }
- if (dataStoreOnly) {
- clientGet.setDataStoreOnly(true);
- }
- if (maxSize != null) {
- clientGet.setMaxSize(maxSize);
- }
- if (priority != null) {
- clientGet.setPriority(priority);
- }
- if (realTime) {
- clientGet.setRealTimeFlag(true);
- }
- if (global) {
- clientGet.setGlobal(true);
- }
- try (FcpReplySequence replySequence = new FcpReplySequence(threadPool, fcpConnection.get())) {
- Sequence sequence = new Sequence(identifier);
- replySequence.handle(AllData.class).with(sequence::allData);
- replySequence.handle(GetFailed.class).with(sequence::getFailed);
- replySequence.handleClose().with(sequence::disconnect);
- replySequence.waitFor(sequence::isFinished);
- replySequence.send(clientGet).get();
- return sequence.isSuccessful() ? Optional.of(sequence.getData()) : Optional.empty();
- }
- }
- });
- }
-
- private class Sequence {
-
- private final AtomicBoolean finished = new AtomicBoolean();
- private final AtomicBoolean failed = new AtomicBoolean();
-
- private final String identifier;
-
- private String contentType;
- private long dataLength;
- private InputStream payload;
-
- private Sequence(String identifier) {
- this.identifier = identifier;
- }
-
- public boolean isFinished() {
- return finished.get() || failed.get();
- }
-
- public boolean isSuccessful() {
- return !failed.get();
- }
-
- public Data getData() {
- return new Data() {
- @Override
- public String getMimeType() {
- synchronized (Sequence.this) {
- return contentType;
- }
- }
-
- @Override
- public long size() {
- synchronized (Sequence.this) {
- return dataLength;
- }
- }
-
- @Override
- public InputStream getInputStream() {
- synchronized (Sequence.this) {
- return payload;
- }
- }
- };
- }
-
- public void allData(AllData allData) {
- if (allData.getIdentifier().equals(identifier)) {
- synchronized (this) {
- contentType = allData.getContentType();
- dataLength = allData.getDataLength();
- try {
- payload = new TempInputStream(allData.getPayloadInputStream(), dataLength);
- finished.set(true);
- } catch (IOException e) {
- // TODO – logging
- failed.set(true);
- }
- }
- }
- }